Lubricator



ments of the machine.

A UNITEDV STATES PATENT OFFICE.

VILLIS M. DERBY, OF MINNEAPOLIS, MINNESOTA.

LUBRICA'OR.l

SPECIFICATION forming part of Letters Patent No. 376,432, dated January 17, 1888.

Application tiled August 1,1887. Serial No. 245,771.

To @ZZ whom it 17mg/ concern:

Be it known that I, WILLIS M. DERBY, of

Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new Vfrom the cup with an even and regular flow,

which may be regulated to suit the require- Other features of my invention will appear in the following detailed description. j

In the accompanying drawings, which form a part of this specification, Figure 1 is a side elevation of my improved cup. Fig. 2 is'a central section, taken on line .r mot' Fig. 3, looking in the direction denoted by the arrow. Fig. 3 is a plan view. Figs. 4 and 5 are details.

-2 represents the cup or receptaclevfor the lubricant, which may be constructed of any convenient size, form, or material, and adapted to be secured in any convenient manner to the machine to which it is applied, and is provided with a discharge opening, 4, for the exit of the lubricant.

6 is a piston, which fits closely the interior of the cup, and is secured to the lower end of a screw-threaded rod, 8. This rod is provided at its upper extremity with a hand-wheel, 10,. by which it can be operated by hand, if desired.

1,2 is a cap or cover having a central opening through which the rod 8 passes,` and which is internally screw-threaded to snit the thread on the said rod. I prefer to place a flange, 14, on thek under surface of this cap,whicl1 iits over the upper edge of the cup. The outer circumference of` this cap is constructed with teeth similar to aworm-gear, by which means the cap is revolved, as will be hereinafter described.

A flange, 16, is preferably constructed on the outer surface of the oil-cup near the top, and a plate, 18, issupported by and secured to this flange, and extends over the top of the cap 12. A hub, 20', on the saidl cap fits in a corresponding recess in the plate, which al- (No model.)

lows the cap to` revolve under the plate, but holds it in position upon the cup.

22 is a wheel mounted `and revolving upon a pin or axle, 24, secured to the plate 18. This wheel is provided upon its outer face with the flange 26, and upon its inner face with the volute projection or rib 28. The wheel is so mounted upon-the plate that this volute rib 28 on the inner surface will fit between the teeth cut on the outer circumference ofthe cover 12, so that by the revolution of the wheel 22 motion is imparted to the cover. Y

30 is a standard upon the plate 18, which is recessed or bored to receive the hub of a sliding nut, 32. This nut is internally screwthreaded, and receives the screw-threaded end of the operating-rod 34. A jam-nut, 36, is also placed. upon the rod 34, and bears upon the nut 32,to hold it in position upon the rod. A collar, 38, is secured to the operating-rod 34, and is held in position by means of the set-screw 40. This collar is preferably provided with a socket or recess, which receives the outer end ot' the friction-clamp 42. This clamp is provided with the bevel-jaws 44, one upon the inside and one upon the outside of the flange 26 of the wheel 22. The frictionclamp 42 is pivoted to a lever, 45, upon which rests a spring, 46, secured to a stationary collar, 48, on the shaft 24. This spring bears upon the top of the friction-clamp, and aids yin clamping the flange as the rod 34 is operated. A second friction-clamp, 50, is secured .to the standard 30,.and engages the flange 26.

This clamp operates to hold the wheel and prevent it from receding when the driving friction-clamp is released.

It is necessary to prevent the turning of the piston in the cup as the cap is revolved, in order that the piston may be fed downward. I prefer to do this by means of a slot or groove, 52, extending lengthwise of the rod, into which is fitted a bolt or pin, 53, secured to the plate 18. I prefer to make this bolt automatic in its action, so that it will be thrown out of the groove before the piston reaches the bottom of the cup. In order to do this I arrange the bolt 53 to slide in suitable ways on the supporting-plate 18, and provide it with a suit- ICO able spring, 56, to force it forward and keep it within the groove. rlhe upper side of the bolt or pin 53 is beveled or rounded, and the upper extremity of the groove 52 is rounded out, as shown in Fig. 4, so that as the pistonrod reaches a position near the end of the stroke the bolt will be thrown out, and the rod Sand piston 6 may then revolve with the cap. I prefer to provide the haiid-wheel A10 with a hub, 15, having its lower edge beveled, and to form a i'ecess, 17, iu the top of the cap surrounding the pistoii-rod, also beveled corresponding to the bevel of the hub 15. As the piston is forced down by the action of the revolving cap on the screw-threaded pistoii-rod and before it reaches the bottoni of the cup,

the beveled edge of the hub will strike the cap in the recess 17 and the rod and cap will be thus locked and will revolve together. No damage can possibly occur to the cup from any neglect ou the part of the operator.

I prefer to provide the slide or bolt 53 with a catch, 60, held loosely in the said slide and arranged to fall into a recess, 6l, iii the plate 18 when the bolt is drawn back and hold the bolt out of the groove. Then the bolt is in this position, the piston may be fed by hand (if it should be necessary) by turning the hand-wheel 10 until the piston has been forced down to any required point. The whole cap and piston may be removed by releasing the screws which hold the plate 18 to the body of the cup. Thisl may be done when it is desired to ill the cup.

rlhe details of the construction and arrangeinent inay be varied without departing from my invention.

In the operation of my device the operatingrod 34 may be given a reciprocating motion from any moving part of the machine to which the cup is applied. As the rod 34 yis raised, the nut 32 slides in the standard 30. This gives an increased and better weariiig-surface for the sliding rod, and at the saine time allows for an adjustment ofthe rod. The collar38, secured to the rod, raises the friction device in contact with the wheel 2 2. This gives to the said wheel a certain portion of a ievolution, and the volute 28, acting upon the teeth in the outer circumference of the cap 12, imparts a slight motion to the said cap, and will, as the operation continues, revolve the cover upon the screw-tlii'eaded piston-rod 8 and force the piston dowii in the cup until the contents of the cup are exhausted.

rlhe device for locking the piston and the cover together when the pistou has reached a point near the bottom of the cup is especially desirable and advantageous, for the reason already set forth. Another especial advantage arises from the fact that the operating-rod can be adj usted by turning the threaded nut thereon, so as to regulate the throw of the rod and thereby the movement of the piston while the device is in operation. Again, by removing parts may be removed for the purpose of refilling the cup without altering the adjustment of the operatiiig-rod.

I claim as my invention 1. The combination, with the lubricatingcup 2, of the cap 12, fitting upon s aid cup and provided with a worin-gear upon its edge and a threaded central opening, the pistou 6, tting in said cup, the threaded rod 8, secured to said piston and passing through the threaded opening in the cap, the plate 18, and the wheel 22, .having the volute rib 28 engaging said worin-gear, substantially as described.'

2. The combination, with the lubricatingcup 2, of the cap 12, having the threaded central opening, the plate 18, the piston 6, the threaded stein 8, secured to said piston and passing through said cap and having the groove 52, the bolt 53, engaging said groove, the spring 56, and the latch on said bolt for holding said bolt out of engagement with said groove, substantially as described.

3. The combination, with the lubricatingcup 2, of the cap 12, having the threaded eenter and the beveled recess 17, the piston ti, and the threaded piston-rod 8, secured to said piston and having the beveled hub 15, substantially as described.

4. The combination, with the lubricatingcup 2, of the cap 12,;having the worm-gear on its edge, the plate 18, the piston and pistonrod, the wheel 22, engaging said cap and provided with the {iange 26, the friction-clamp engaging said flange, lever 45, and the operating-rod, substantially as described.

5. The combination, with the cup 2, of the cap fitting said cup and adapted to revolve thereon and provided with a threaded central opening, and the worin-gear on its edge, the wheel 22, having the volute rib 28 engaging said worm-gear, a plate, 18, secured to the cup and holding said cap in place, the piston 6, the threaded piston-rod 8, passing through the opening in said cap, substantially as described.

6. The combination, in a lubricatingeup, with the movable piston and a threaded rod on said piston, of the revolving cap having a threaded opening through which said rod passes, and a locking device consisting of beveled hub 15 and recess 17 on said rod and cover, whereby when the piston reaches the end of its stroke the rod and the cover are locked together, substantially as described.

7. rlhe combination, in a lubricator, with the cup, ofthe piston fitting therein and having a threaded rod, a cap having a threaded opening engaging said rod, a worm-gear on the edge of the cap, a wheel engaging said worm-gear, the adjustable operating-rod 34, lever 45, and clanip 42 therewith, and an adjustable operating-rod, substantially as described.

8. The combination, in a lubricator, with the cup, piston-rod, and piston, of the cap, the

the plate 18 the cover, piston, and all of the l plate 18, arranged over said cap and secured IOO IIO

to said cup, and the operating-Wheel 22, ,sehaving the ange 26, the plate 18, the arm 45, cured upon said plate, whereby the plate, cap, having the friotionelamp 42 pivoted thereto, piston, and operating-wheel 22 may be rethe operating-rod, and the friction-catch 50, `moved from the cup without changing the adall substantially as described.

5 justrnent ofthe operating device, substantially In testimony whereof I have hereunto set 15 as described. my hand this 25th day of July, 1887.

9. The combination, in a`lubricator,rwith WILLIS M. DERBY. the piston-rod 8, the piston, and cap having In presence ofthe Worm-gear on its face, of the Wheel 22, A. C. PAUL, 1o having the volute rib engaging said gear, and R. H. SANFORD. 

